臺灣博碩士論文加值系統

在控制作業場所有害物質的方法中，工業通風是職業衛生上常見的控制方法。除能夠控制污染物濃度在容許濃度以下，亦可維持舒適的溫濕條件，提供足夠新鮮空氣以防止作業環境空氣品質惡化而影響健康。設計得當的通風系統能夠將作業場所中有害物質有效的排除，同時也能改善作業環境的空氣品質，使作業人員能夠有一個安全而又舒適的工作環境。
本研究透過全尺寸實驗分析，探討以示蹤氣體濃度衰減法進行整體換氣性能評估分析時相關影響參數，實驗結果顯示以示蹤氣體濃度衰減法之初始釋放濃度並不會影響整體通風換氣率的測試結果。而空間中的障礙物對通風換氣氣流阻礙面積大小會影響空間中空氣交換效率，研究歸納出一混合因子K與障礙物所形成之受風面積大小之間的關係。而取樣點之點數與位置亦會因是否在氣流路徑上而影響換氣率之分析結果。

Industrial ventilation is a common method in industrial hygiene reducing the hazardous substances in workplaces, it can not only prevent the escape contaminants into the workplaces below the permissible exposure level (PEL), but also can maintain a comfortable temperature and humidity conditions and supply enough fresh air preventing air pollutants in workplaces.
The purpose of this program is to investigate the general ventilation problem and technology that company faced and needed under the current regulations. International standards and technologies about how to design and maintain an effective general ventilation system, and qualifications and systems of a professional will also be collected as a reference of modifying or making laws.
The project used tracer gas to evaluate the general ventilation efficiency in a full scale chamber. The results show that the initial contaminant concentration did not influence the ventilation efficiency but the obstacle area will impact the ventilation efficiency. The K factors will response the real efficiency. However, the sample point number and location will also affect the ventilation efficiency.

摘要 I
ABSTRACT II
誌謝 III
目錄 IV
圖目錄 VI
表目錄 VII
符號說明 IX
第一章 緒論 1
1-1研究目的與動機 1
1-2文獻回顧 2
1-3研究內容 5
1-4研究架構與流程 6
第二章 研究理論 7
2-1空氣污染物特性 7
2-1-1室內空氣污染物 7
2-1-2 室外空氣污染源 8
2-1-3氣體污染物 9
2-2整體換氣室內空氣品質問題診斷與控制策略 9
2-2-1室內空氣品質問題 9
2-2-2室內空氣品質控制策略 11
2-3整體換氣相關性能規範 12
2-4整體換氣性能評估方法介紹 19
第三章 實驗分析 25
3-1實驗目的 25
3-2實驗操作流程 26
3-3實驗變數與組數設計 28
3-4實驗設備說明 31
3-5實驗結果說明 35
第四章 數值模擬分析 39
4-1 CFD數值模擬之流程 39
4-2模擬之基本假設 42
4-3網格測試 43
4-4隔點系統設定 44
4-5邊界條件設定 45
4-6數值模擬結果說明 46
第五章 結果分析與討論 48
5-1室內空調通風之氣流 48
5-2實驗結果與數值模擬比對 51
5-3採樣點設置於排氣口之模擬分析 53
5-4障礙物對作業環境整體換氣性能評估之影響 55
第六章 結論與建議 58
6-1結論 58
6-2後續研究建議 59
參考文獻 60

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